Properly initialize the sockaddr to not compare garbage.

--- poppass.c.orig	Fri Aug  3 23:16:24 2007
+++ poppass.c	Wed Dec  3 13:19:25 2014
@@ -91,7 +91,7 @@ fork_slave(int pipe_prnt[2])
 	/* Open TCP-socket */
 	server_socket = setup_listeners(se);
 
-	/* Set group access list and (effective) group/user id to "_poppass" */
+	/* Set group access list and (effective) group/user id to "_poppassd" */
 	if (setgroups(1, &pw->pw_gid) ||
 	    setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
 	    seteuid(pw->pw_uid) || setuid(pw->pw_uid))
@@ -142,6 +142,8 @@ setup_listeners(struct servent *se)
 	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 		fatal("socket");
 
+	memset(&server_sock, 0, sizeof(server_sock));
+	server_sock.sin_len         = sizeof(server_sock);
 	server_sock.sin_family      = AF_INET;
 	server_sock.sin_addr.s_addr = inet_addr(LISTEN_IP);
 	server_sock.sin_port        = (short)se->s_port;